Surveys and studies on traditional pig raising in Guangxi
1999
Minrui, H. | Zhiqing, L. | Minsheng, H. | Weihe, L. | Chifeng, L. (Guangxi Inst. of Animal Sciences, Nanning (China))
Main studies were conducted on traditional pig raising (TPR) fed with local feeds effected on reproductivitiesof sows and productivities of fattening hogs with the methods of on the spot surveys, tests and consulting literatures for backgrounds of agriculture, livestock industry, feed resources and present situations of pig production. Through surveyed on reproductivities of 320 sows and on live weight gains and feed consumed of 3109 hogs sold, it was shown that on an average, a live litter size of a sow was 10.57 heads with initial weight of 8.45 kg/litter when born and was 9.83 heads with the weight of 110.8 kg /litter when weaned at 57.50 days old. Delivery interval was 180-205 days. Duration of reproduction of the sows was 5-8 years. With TPR, it could save 20- 30 percent concentrate stuff but time for slaughtering of hogs was extended to 2-5 months; it could save 50-60 percent concentrate with the sows. By tested on 41 fattening hogs, the experiment groups basically lived on green forages with a diet containing 12.15-18.05 percent crude fiber (CF) per kg dry matter (DM) gained 495g/head per day and 1.79 kg concentrate, 1.41 kg roughage and 11.95 kg green forages should be consumed to gain one kg live weight, which had 10.84 Mcal digestible energy (DE) and 480 g crude protein (CP). On the basis of the investigation, the advantages and disadvantages of TPR were pointed out and some options and suggestions on the improvement of TPR were put forward.
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